Electrical coupling



A. VON POST.

v ELECTRICAL COUPLING. Armcmok man APR.5.1916. RENEwED JUNE 23, 1919.

i 1 Patented Fb. 3,1920.`

ADoLE VONl rosT7 or LONDON, ENGLAND.'

ELECTRICAL COUPLING.

Specification of Letters Patent.

Patented Feb. 3, 1920.

Application 1ed April 5, 1916, Serial No. 89.066. Renewed .Tune 23, 1919. Serial No. 306,209.

To all i/:ioni t may concern Be it known that I, Anoiai voN los'r, a subject oi the King of Sweden, residing at London, England, have invented certain new and useful lmproven'ients in Electrical Couplings, oic which the following is a specification.

-My invention relates to electrical couplings for use in connection with household electrical appliances, such toi' example as lamps, cooking utensils or other articles commonly employed on tables. The chiet' object l' have in view is to avoid 'the unsightly appearance oi cords overlying the table covering. My invention provides a form of coupling whose members can'be placed above and below the table covering immediately beneath or adjacent to the electrical appliance resting upon the table, an electrical connection -between which memhere` can be established without damage to the table covering. My coupling is furthermore ot' such a character that wires can be attached to its members most expeditiously', and the electrical union between the members can be eli'ected by extremely simple manipulation.

lii the drawings which accompany and form part ot' this specification l have illustrated a preferred form of embodiment of my invention and a simple application of it. Figure 1 represents a portion of a'table top with a covering upon it, and the coupling of my invention serving to establish electrical connection from any suitable source of ciirrent-supply to a lamp resting upon the table; Fig. 2 shows t-lie coupler in longitudinal section; Fig. 3 shows one of its parts in similar section and Figs. 4 yand 5 show other paits in elevation.

My coupling as here illustrated comprises tivo parts. There is a double ended member A comprising a central disk (t and oppositely projecting split sockets a. and a?. Each of these sockets is screw-threaded on the exterior from the disk (L for about twothirds of its length. Thence the socket is smooth on its exterior and of a reduced diameter and it tcrn'iinates in a conical endportion n.3. Another member B of the coupling comprises a disk b, and split socket o on one side thereoiC having the same construction as the sockets of the member A,

ln connection with the. above described two main members of `my couplin", I employ three clamping sleeves which screw upon the respective split sockets. The central one ot' these sleeves, designated C, is interiorly screw-threaded to engage the Socket a, and its head is apertured and beveled interiorly aroiiud the aperture as shown at c. The pin b2 is adapted to be, inserted through the aperture and thrust into the split-socket and clamped therein by the screwing up of the sleeve C, whose interior bevel c operates upon the conical end n3 of the socket. The other two sleeves D and E are of the same construction as the sleeve C, and they screw upon the sockets a2 and 7; respectively and operate upon the conical ends thereof to cause these sockets to clamp within them the wires which convey the electrical current.

In use, the wires having been clamped in the sockets a3 and respectively and the sleeve l) having been applied to the socket i2 but notiscrewed up, that portion of the coupling comprising the member A and the two sleeves and D, is placed on one side oi' the table covering, and the other niember ot' the coupling7 comprising the member B and the sleeve E, is placed on the other side of the table covering and the pin b2 is passed through the table covering into the socket 1.2. Then the sleeve D is screwed up. I make the pin small and sharp-pointed so that it may bc worked through the table covering without rupturing the same. The wire connecting with the memberA of my coupling, which is beneath the table covering,'

may be accommodated in the crack of the table top between its leaves Without notice ably widening the crack.' The whole coupling may be accommodated in the hollow base of a lamp as illustrated in Fig. 1. Furtheriuore the fullness of the table covering occasioned by the projection of the coupling member above the table top will be covered by the hollow base oiC the lamp.

It will be seen that the above described construction is well adapted to carry out the object primarilvY stated. At the same time it must be understood that I do not confine myself to the precise form of construction here shown. Then of course there aremany other uses to which the invention can be put than the particular one here instanced.

Vhat I claim and desire to secure by Letters Patent is l. An electrical coupling for making an electric connection through cloth fabrics comprising a split socket, a sleeve applied thereto with provisions for contracting Athe same, and a slender, pointed pin to pierce the fabric and removably engage the socket; together with means for connecting Wires With the socket and the pin respectively.

2. An electrical coupling for makin an electric connection through cloth fa rics comprising a split socket, exteriorly screwthreaded and terminally tapered, an interiorly screw-threaded sleeve having an apertured head interiorly beveled, and a slender,

pointed pin to pierce the fabric and removably engage said socket; together with means for connecting Wires with the socket and the pin respectively.

3. In an electrical coupling, the combination of a member comprising a disk and split sockets projecting from opposite sides thereof and exteriorly screw-threaded and terininally tapered; interiorly screw-thread ed sleeves with apertured heads interiorly beveled; a disk having a pin projecting from one side and a split screw-threaded socket projecting from the opposite side and terminally tapered; and a sleeve screwing onto said socket and having an apertured head interiorly beveled.

In testimony whereof I afiiX my signature.

ADOLF voN POST. 

